All 40 electrolyzers at the ACES Delta storage hub in Utah have been installed and have operated at 100% load, HydrogenPro, the site’s electrolyzer supplier, said during its Q4 2025 earnings call on February 27. The site, which is nearing completion, will be one of the largest green hydrogen production and storage facilities in the U.S. once operational.
Located in Delta, UT, the site is designed to have 220 MW of electrolysis capacity powered by renewable energy. The project — jointly developed by Chevron New Energies and Mitsubishi Power — would enable utility- and industrial-scale green hydrogen production and also support the Intermountain Power Agency’s IPP Renewed Project — an 840-MW hydrogen-capable combined-cycle power plant that would initially run on a blend of 70% natural gas and 30% hydrogen, potentially expanding to 100% hydrogen by 2045.
The ACES project is designed to produce up to 100 MT/d of green hydrogen, which would be stored in two salt caverns (see schematic below), each with the capacity to dispatch 150 gigawatt hours (GWh) of energy back to the grid when needed. The project received a $504.4 million loan guarantee from the U.S. Department of Energy (DOE) in 2022.
The power plant will replace the IPA’s 1,800-MW coal-fired power plant, which stopped producing electricity just before Thanksgiving. The coal units have remained operational while the state looks for new customers for their power, as state law prohibits decommissioning work on the units. The units had been running at low capacities for several years due to a lack of demand, the IPA said.
HydrogenPro CEO Jarle Dragvik said there is a “broad market consensus” that green hydrogen demand could reach 5-10 MMtpa (million tons per annum) by 2030, with the progress of the ACES project adding confidence to the market.
“As market expectations improve, there is increasing focus on proven project delivery capability in a market where supply of low-cost green hydrogen is constrained,” he said.
